Just below threshold, consistel1tto theoretical analysis, there are numbers of comb-like narrow linewidthlights due to resonating of ifltr8-cavity ASE light.

• 首先理论分析了当有源环形腔无注入光，且有源光纤环形腔在阈值以下时，由有源腔内ASE输出光表现出的腔输出特性。